Garza irrigation: update some names and fix units

Fixed units per code review. Also changed some naming to be more concise, and moved brand name to manufacturer under products in case clones exist under other brand names in other markets.

custom_components/tuya_local/devices/garza_irrigation_system.yaml

@@ -1,11 +1,11 @@
-name: Garza WiFi garden irrigation system
+name: Garden irrigation system
 product:
   - id: xnajzurgqo1ugohn
     model: ITV103W
+    manufacturer: Garza
 primary_entity:
   entity: switch
   icon: "mdi:watering-can"
-  name: Switch
   dps:
     - id: 108
       type: boolean
@@ -53,12 +53,12 @@ secondary_entities:
       - id: 107
         type: integer
         name: value
-        unit: m
+        unit: min
         range:
           min: 0
           max: 60
   - entity: sensor
-    name: Work status
+    name: Status
     class: enum
     icon: "mdi:list-status"
     category: diagnostic
@@ -74,7 +74,7 @@ secondary_entities:
           - dps_val: 2
             value: "Auto"
   - entity: binary_sensor
-    name: Alarm status
+    name: Alarm
     category: diagnostic
     class: problem
     dps: